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Diffstat (limited to 'gcc/ada/s-stoele.adb')
| -rw-r--r-- | gcc/ada/s-stoele.adb | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/gcc/ada/s-stoele.adb b/gcc/ada/s-stoele.adb new file mode 100644 index 00000000000..b469ad208b7 --- /dev/null +++ b/gcc/ada/s-stoele.adb @@ -0,0 +1,88 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- S Y S T E M . S T O R A G E _ E L E M E N T S -- +-- -- +-- B o d y -- +-- -- +-- $Revision: 1.8 $ -- +-- -- +-- Copyright (C) 1992,1993,1994 Free Software Foundation, Inc. -- +-- -- +-- GNAT is free software; you can redistribute it and/or modify it under -- +-- terms of the GNU General Public License as published by the Free Soft- -- +-- ware Foundation; either version 2, or (at your option) any later ver- -- +-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- +-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- +-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNAT; see file COPYING. If not, write -- +-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-1307, USA. -- +-- -- +-- As a special exception, if other files instantiate generics from this -- +-- unit, or you link this unit with other files to produce an executable, -- +-- this unit does not by itself cause the resulting executable to be -- +-- covered by the GNU General Public License. This exception does not -- +-- however invalidate any other reasons why the executable file might be -- +-- covered by the GNU Public License. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +with Unchecked_Conversion; +package body System.Storage_Elements is + + pragma Suppress (All_Checks); + + function To_Address is new Unchecked_Conversion (Storage_Offset, Address); + function To_Offset is new Unchecked_Conversion (Address, Storage_Offset); + + -- Address arithmetic + + function "+" (Left : Address; Right : Storage_Offset) return Address is + begin + return Left + To_Address (Right); + end "+"; + + function "+" (Left : Storage_Offset; Right : Address) return Address is + begin + return To_Address (Left) + Right; + end "+"; + + function "-" (Left : Address; Right : Storage_Offset) return Address is + begin + return Left - To_Address (Right); + end "-"; + + function "-" (Left, Right : Address) return Storage_Offset is + begin + return To_Offset (Left - Right); + end "-"; + + function "mod" (Left : Address; Right : Storage_Offset) + return Storage_Offset is + begin + if Right >= 0 then + return Storage_Offset (Address'(Left mod Address (Right))); + else + return -Storage_Offset (Address'(Left mod Address (-Right))); + end if; + end "mod"; + + -- Conversion to/from integers + + function To_Address (Value : Integer_Address) return Address is + begin + return Address (Value); + end To_Address; + + function To_Integer (Value : Address) return Integer_Address is + begin + return Integer_Address (Value); + end To_Integer; + +end System.Storage_Elements; |